Thread guide for cone or tube winding machines



7 May 30,1939. E, s, KENNEDY 2,160,780

. THREAD GUIDE FOR CONE OR TUBE WINDING MACHINES Filed June 1, 1935 INVENTOR EDGAR s. KENNEDY BY HIS ATTORNEYS 25 and Patented May 30, 1939 NITED STATES PATENT FFiCE v THREAD GUIDE FOR. CONE on TUB '--WINDING MACHINES 1 Application June 1, 1935, Serial No. 24,555.

11 Claims. (01. 242-157) This invention relates to thread guides for cone or tube winding machines, and has for its which will free itself from any loops which may be formed around the guide.

Further objects may become apparent from the following description and the accompanying drawing, in which:

Figure i1. is a side elevation of a conventional winding mechanism, with parts broken away to show the novel thread guide mounted thereon;

Figure 2 is an end elevation of Figure 1;

Figure 3 is a face view of the thread guide;

Figure 4 is a vertical section taken along the line 44 of Figure 3;

2 Figure 5 is a reverse 'view of Figure 3;

Figure 6 is a detail of the springclip;

Figure 7 is an exploded view of the guide supporting parts;

Figure 8 is an elevation of the supporting arm;

Figure 9 is a vertical section through the guide as mounted on the supporting arm.

The portions of the conventional winding machine shown in Figures 1 and 2 comprise a spin- 30 dle l0 adapted to receive a cone center H, such as a coneor other core for a yarn package H.

A weighted lever I3 is pivoted below the spindle,

and has a groove in its upper end receiving a traverse bar H, which is reciprocated by a cam 35 arrangement (not shown). A supporting metal arm I! has a foot I8 secured to the traverse bar,

a retaining tongue l9 therefor, and an upper end on which is mounted a yarn guide 20.

This thread or yarn guide comprises a block 40 of material having a low coefllcient of friction,

such for example as porcelain, with a convex bearing surface to rest against the cone center I I or the package I! wound thereon, and is provided with a yarn guiding eye 2| extending 45 through the center of the convex surface. A thread guide of this character is known in the art and is illustrated for example in the Mitchell Patent No. 883,116, March 24, 1908.

According to the present invention, the upper 60 end of the supporting arm I1 is buried or embedded in the porcelain of the guide, so that no metal is exposed for the yarn to catch upon. There'- verse side of the guide has a concave depression 22 therein and a. central boss 23 forming an annular groove 24. The arm I'I terminates in armate fingers 25 which lies in the groove and embrace the boss 23.

A transverse slot 26 is formed in the base of the guide and extends upwardly therein, terminating in branches 2.! extending one on each side 5 of the boss .23. A spring clip 28 is adapted to enter the slot 26 and has arcuate fingers!!! lying in the branches 21. The lower end of the spring clip '28 is offset to lie against the arm I1, to which it is secured by screws 30, thus rigidly and sel0 curely clamping the guide 20 thereto, without necessitating the use of shellac. or the like.

The yarn guiding eye 2| as shown is triangular in vertical cross section and diverges horizontally toward the winding mechanism. The guide is provided with a vertical slot 3| communicating with the eye 2|, and the surfaces 32 of the guide adjacent to the slot are flared outwardly there-- from, for convenience in threading the eye.

The yarn passes to the eye over a bail 33 which 20 prevents it from passing'below the plane of the eye on that side. Onthe other side, the contact of the guide with the face of the yarn already wound prevents the yarn from passing below the plane of theeye, which may be designated as the 25 yarn level. Hence the yarn can only move upward or to one sideof this yarn level. 4

It should be noted that there are no exposed metal parts of the guide above' the yarn level, and that all sides of the guide converge above the yarn level. Hence there is nothing on which the yarn may catch, and furthermore any loop which mayhappen to be formed around the guidewill free itself due to the converging sides;

There is no opportunity for the loops to catch upon this guide, and actual operation has demonstrated that the presence of any loops on the cone, due to chattering tension grid or slack yarn when starting the spindle, is not harmful.

From the foregoingdescription it will be read- 40 ily apparent that the guide according to the present invention is easier to thread, has the spring clip buried, particularly above yarn level, is fixed to .the holder -more firmly and without the use of shellac, is absolutely rigid, has no junction points of metal to porcelain to catch thread, and has the tapered sides of the guide to prevent loops catching thereon. v

What I claim is: I i v 1 1. A thread guide having a convex bearing surface adapted to rest against the thread on a retating winding mechanism and provided with an eye extending through substantially the center ofv said convex surface, said guide having a vertical slot communicating with said eye whereby thread may be inserted therein laterally and whereby shoulders are formed to retain said thread, the sides of said slot above said shoulders being flared outwardly to facilitate said thread insertion, and the sides of said guide above said eye being tapered inwardly toward the top whereby a loop of thread caught thereon may free itself.

2. A thread guide having a convex bearing surface adapted to rest against the thread on a rotating winding mechanism and provided with a thread guiding eye extending through substantially the center of said convex surface, a supporting arm having an end embedded in said guide, said guide having in its base a .slot extending up within said guide and terminating in branches entirely inside of said guide and on each side of said eye, and means in said slot for securing said guide to said arm.

3. A thread guide having a smooth surface adapted to engage the thread on a rotating winding mechanism and provided with a thread guiding eye extending through said surface, a supporting arm and a clamping member both embedded in said guide, an internal portion of said guide extending between said supporting arm and said clamping member, and means for-drawing said clamping member and said arm toward each other to clamp said internal portion therebetween.

4. A thread guide having a convex bearing surface adapted to rest against the thread on a rotating cone or tube winding mechanism and provided with an eye extending substantially through the center of said convex surface, in combination with means whereby said mechanism prevents the yarn from passing below said eye, the sides of said guide above said eye being tapered inwardly whereby a loop caught thereon may free itself, a supporting arm having a portion sunk into said guide and covered by said tapered sides, and a clip member having a portion secured in a slot in said guide, an internal portion of said guide extending between said supporting arm and clip member, and means for drawing said supporting arm and clip member toward each other to clamp said internal portion therebetween.

5. A thread guide having a convex bearing surface adapted to rest against the thread on a rotating winding mechanism and provided with a thread guiding eye extending through substantially the center of said convex surface, and a supporting metal arm having an attaching means extending into and covered by said guide between said arm and said surface,-'whereby said guide guards the thread against contacting said attaching means. I

6. A thread guide having a smooth surface adapted to engage the thread on a rotating winding mechanism and provided with a thread guiding eye extending through said surface the reverse side of said guide having a concave depres-.

sion with a central boss, a supporting arm having an end projecting into said depression and terminating in fingers extending around the sides of said boss, said guide having in its base a slot extending up within said guide and terminating in branches on each side of said eye, and means in said slot for securing said guide to said arm, whereby said guide guards the thread from contacting said arm.

7. A thread guide having a smooth surface adapted to engage the thread on a rotating winding mechanism and provided with a thread guiding eye extending through said surface, said guide having a slot below said surface, the rear of said guide having a depression, a supporting arm engaging said depression, a clip engaging said slot, and means outside of said guide for rigidly securing said clip to said arm and drawing the guide engaging parts together to clamp the'internal portion of the guide therebetween.

8. A thread guide having a smooth external surface and an eye extending through said surface, a supporting arm engaging a portion of said guide, an attaching member engaging an internal surface of said portion, and means operating with said arm and member to secure them together outside of said guide whereby a rigid mounting is provided, said cooperating means exerting pressure suificient to cause clamping action of said arm and member upon said portion of said guide between said arm and member.

9. A thread guide having a smooth convex surface adapted to engage the thread on a rotating winding mechanism and provided with a thread guiding eye extending through substantially the central portion of said convex surface, a supporting arm engaging an internal portion of said guide, an attaching member engaging another internal portion of said guide, means cooperating with said arm and guide for clamping said internal portions of said guide therebetween, said cooperating clamping means including threaded means for preventing relative rotation of said arm and member.

10. A thread guide having a convex bearing surface adapted to rest against the thread on a rotating winding mechanism and provided with a thread guiding eye extending through said surface, said guide having in its base a mortise extending up within said guide,-in combination with a supporting metal arm for said guide, and means cooperating with said guide and arm for securing the same together comprising a tenon entering said mortise, and means rigidly securing said tenon to said arm outside of said guide and causing said tenon to press against one side of said mortise, and said arm to press against opposite parts of said guide, to clamp internal portions of said guide therebetween.

11. A thread guide having a smooth surface adapted to engage the thread on a rotating windfront of the first jaw, and means for securing said jaws together to effect a clamping action on the internal portions of said guide therebetween.

EDGAR S'. KENNEDY. 

